Solid state crystal growth of single crystals of 0.75(Na1/2Bi1/2)TiO3-0.25SrTiO3 and their characteristic electrical properties
| Autor: | Wook Jo, Dang Thanh Nguyen, John Fisher, Hwang-Pill Kim, Jong-Sook Lee, Phan Gia Le, Thuy Linh Pham |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Strain (chemistry) Solid-state Clay industries. Ceramics. Glass Crystal growth 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology piezoelectric properties 01 natural sciences (na1/2bi1/2)tio3 TP785-869 lead-free piezoelectric dielectric properties visual_art 0103 physical sciences Ceramics and Composites visual_art.visual_art_medium Ceramic Composite material single crystal 0210 nano-technology Actuator Single crystal |
| Zdroj: | Journal of Asian Ceramic Societies, Vol 9, Iss 1, Pp 63-74 (2021) |
| ISSN: | 2187-0764 |
| Popis: | Ceramics of composition 0.75(Na1/2Bi1/2)TiO3-0.25SrTiO3 (NBT-25ST) show a giant electric field-induced strain, making them attractive for actuator applications. Single crystals generally have improved piezoelectric properties over their ceramic counterparts, but the electrical properties of NBT-25ST single crystals have not yet been studied. In this work, NBT-25ST single crystals are grown by the solid state crystal growth technique and their electrical properties measured for the first time. The single crystals show relaxor ferroelectric behavior typical of an NBT-type material. The ferroelectric and inverse piezoelectric properties depend strongly on crystallographic orientation, with superior properties in the (001) orientation. The inverse piezoelectric properties of the (001)-oriented NBT-25ST single crystal are superior to those of an NBT-25ST ceramic (Smax/Emax = 1042 pm/V vs. 739 pm/V). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|